/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package ru.miit.elearning.vtutor.servlets;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONArray;
import org.json.JSONObject;
import ru.miit.elearning.vtutor.check.ZOSCheckServiceClient;
import ru.miit.elearning.vtutor.data.DataMiner;
import ru.miit.elearning.vtutor.wsclient.curriculum.VlStudent;

/**
 *
 * @author Cyclone
 */
public class EnrichTableServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        DataMiner miner = null;
        try {
            //int labId = Integer.parseInt(request.getParameter("labId"));
            //int studentId = Integer.parseInt(request.getParameter("studentId"));

            int courseId = Integer.parseInt(request.getParameter("courseId"));

            miner = new DataMiner();

            JSONArray studentsArray = new JSONArray();

//            List<User> userList = miner.findStudentsByCourse(courseId);
//            for (User user : userList) {
            List<VlStudent> studentList = ZOSCheckServiceClient.getStudentsByCourse(courseId);
            for (VlStudent student : studentList) {


                JSONObject jsonStudent = new JSONObject();
                jsonStudent.put("studentId", student.getId());

                JSONArray studentLabs = new JSONArray();
                Map<Integer, Integer> map = miner.findPercentByUserByCourse(courseId, student.getId());
                for (Iterator<Integer> it = map.keySet().iterator(); it.hasNext();) {
                    int labNumber = it.next();
                    int finished = map.get(labNumber);

                    JSONObject labJSON = new JSONObject();
                    labJSON.put("labNumber", labNumber);
                    labJSON.put("percent", finished);

                    studentLabs.put(labJSON);
                }


                jsonStudent.put("studentLabs", studentLabs);

                studentsArray.put(jsonStudent);

            }
            //Map<WorksOnLab, Integer> wolMap = miner.findPercentByWork(courseId);
            
            
            JSONObject json = new JSONObject();
            json.put("students", studentsArray);
            
            out.print(json);

        } catch (Exception e) {
            Logger.getLogger(EnrichTableServlet.class.getName()).log(Level.SEVERE, null, e);
            e.printStackTrace();
        } finally { 
            out.close();
            if(miner != null) {
                miner.close();
            }
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
